Robot Santa Claus was built in 2801 by Mom's Friendly Robot Company. His designers intended him to deliver gifts to all the good people of Earth on Xmas Eve. However, due to a glitch in his judgment circuits, his standards are impossibly high, and he invariably judges everyone to be naughty (one exception is Zoidberg, to whom he gave a pogo stick) - and then he tries to kill them.

Santa Claus spends most of the year living in his Death Fortress on Neptune. His fortress is surrounded by a small town inhabited by his aides, shrimpy Neptunians. These workers growth is stunted by the lack of food, so they reach an adult height equivalent to the height of a human knee (as opposed to a healthy Neptunian, such as Elzar, who is comparable in height to a human) and they are all unemployed since the toy factory closed down because of Robot Santa's malfunction.

Robot Santa: Fry and Leela, you've both been very naughty! I checked my list.Fry: Well... Check it twice!Robot Santa: I perform over fifty mega-checks per second!

Robot Santa: You have all been very naughty, very naughty indeed! Except you Dr. Zoidberg, this is for you.Zoidberg: A pogo stick!

Robot Santa: Your mistletoe is no match for my T.O.W. missile!

Neptunian: We brought your mail.Santa: Don't you ever knock? Who knows what naughty things I could be watching? I get New Orleans on this thing, you know!Neptunian: Don't kill us!

Robot Santa: I'm going to tear off your skin like wrapping paper and deck the halls with your guts!

Robot Santa: Ho...ho...ho. Oh, my heart's not in it. I'm too depressed for murder and mayhem.Amy: Aw, here have some antidepressants. They're gummy.Fry: What's wrong, Santa?Robot Santa: The scammers cheated me of my naughty list to use for telemarketing. Can you imagine the damage they could do with that list? I wanted to do that damage!